Quote:
Originally Posted by Daves55Sedan
If you look closely at that throttle link screw at the top of the bellcrank, you'll notice that it has an indentation machined into it for the sprag of the spring to settle into. This is the main throttle return spring. I think these are still available from most repro parts suppliers.
The only other spring I can think of is the passing gear swivel return spring, but it has nothing to do with engine idle speed. The only thing that spring does is to allow the driver to stomp the gas pedal to the floor (whereby the gas pedal travel far exceeds the passing gear link) at the transmission. This spring allows the gas pedal to be fully depressed, which bottoms out the passing gear link. This spring takes up that slack.
This spring MUST be employed, or the passing gear mechanism will not be effective.
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I have a stick shift so I don't think I have a passing gear link. I'll have to put a flashlight on that throttle link screw to see if there is an indentation. Thank you for your explaination.